Fireproof cable tray is a support that can support and place cables. Fireproof cable tray is widely used in engineering. As long as cables are laid, cable tray shall be used. Although cable tray is a supporting project of wiring engineering, there is no specific specification guidance at present, and the specification program of each manufacturer is lack of generality. Therefore, the design and selection process shall reasonably select the applicable bridge according to the type and quantity of cables displayed in each system Frame. Cable bridge has the characteristics of complete variety, wide application, high strength, light structure, low cost, simple construction, flexible wiring, installation standard, beautiful appearance, etc.

The structure of fire-proof cable bridge mainly includes trough type, tray type, ladder type, network format, etc., which is composed of bracket, bracket, installation accessories, etc. Attention shall be paid to whether all parts of the bridge meet the requirements of serialization, generalization and standardization. The bridge in the building can be erected independently or attached to various buildings (structures) and pipe gallery supports, which should reflect the characteristics of simple structure, beautiful shape, flexible configuration and convenient maintenance. All parts need to be galvanized, and the bridge installed outside the building in the open air. If it is near the sea or belongs to the corrosion area, the material must be corrosion-resistant, moisture resistant and good adhesion, The physical properties of high impact strength.

In order to reduce the weight, aluminum alloy cable and glass fiber reinforced plastic bridge can also be used. Their overall dimensions and load characteristics are basically similar to those of steel bridge. Due to the different proportion of aluminum and steel, the ratio of aluminum to steel is about 1:3 based on the weight. According to the market price conversion of the two materials, the cost of aluminum alloy bridge is 2.0 times higher than that of similar galvanized steel bridge, and the aluminum alloy bridge has beautiful appearance, In recent years, aluminum alloy fireproof cable bridge has been applied in some projects.